Solar Edge electric wiring
1 report to CPSC, the latest made Oct 3, 2026. A report isn’t a recall.
Watch and the shortlist are kept with a free account, on every device. Your watch list. CPSC’s own search is on saferproducts.gov.
At a glance
From SaferProducts.gov, released Nov 4, 2026.
- 1report to CPSC
- Oct 3, 2026the latest report was made
- Oct 3, 2026the earliest
- 0with the company’s comments
- Brand
- Solar Edge
- Maker
- SolarEdge Technologies, Inc.Makers, importers or sellers, as the reports name them
- Product
- Electric wiringNot panel boards or outletsCPSC’s product type: Electric Wire or Wiring Systems (Excl Panelboards Recept (code 4062), in Home Maintenance and Structures: Electrical Systems
By month
The numbers, as a table
| Month | Reports |
|---|---|
| October 2026 | 1 |
How badly anyone was hurt
- No one hurt 1 CPSC: Incident, No Injury
As each report says it, in short words; CPSC’s own words are under each.
The reports, as CPSC published them
Reports people made to the U.S. Consumer Product Safety Commission. CPSC publishes each one after sending it to the company named, and doesn’t guarantee they’re accurate. A report isn’t a recall.
Each report is the words of the person who made it, as CPSC published them. The company’s comments, where CPSC published any, are set apart as the company’s own.
CPSC, SaferProducts.gov public database export. Released Nov 4, 2026. Updated daily.
-
No one hurt Made Oct 3, 2026, sent to the company Oct 19, 2026, published by CPSC Nov 2, 2026
The product, in the report: SolarEdge Optimizer S440
WHAT HAPPENED THAT MADE YOU WANT TO REPORT During systematic engineering evaluation and isolation verification testing of power optimizers, a deviation in the environmental sealing and the subsequent software safety loops was identified. Under wet conditions, multiple factory-new units fell below the required insulation resistance (Riso) thresholds, recording values of 0.1 MOhm and 0.0 MOhm under a 1 kV DC test voltage. Concurrently, the system’s power line communication (PLC) protocol did not initiate the expected safety voltage reduction (SafeDC) during the presence of these isolation faults, leaving the high-voltage DC string potential active at approximately 820 V DC.
WHAT TYPE OF PRODUCT(S) WERE BEING USED: SolarEdge S440 Power Optimizers (DC-to-DC converters utilized in solar photovoltaic installations).
WHO WAS USING THE PRODUCT(S): Myself. In regular market operation, these components are installed on residential and commercial rooftops.
HOW WERE THE PRODUCT(S) BEING USED: The components have been used according to the intended use. After suspicious behaviour, laborytory tests have been performed to reproduce this issue. The components were subjected to standard insulation resistance monitoring using a [REDACTED] tester. To maintain strict methodological control, immersion in the water medium was limited to the main casing seal level. All external MC4 connectors remained entirely dry and outside the water to isolate the entry path exclusively to the casing architecture and potting boundaries.
WERE THERE ANY INJURIES THAT HAPPENED OR MAY HAVE HAPPENED: No physical injuries occurred within this laboratory evaluation group. However, the failure of the system to consistently drop to the safe voltage level (~1 V per optimizer) during an active insulation fault presents an unmitigated electrical shock and thermal hazard under fault conditions.
HOW DID ANY INJURIES OCCUR / MAY OCCUR: Potential electrical or thermal hazards may occur if moisture penetrates the casing (via identified potting voids or mechanical stress points on the internal insulation laminate caused by the internal heatspreader geometry) while the firmware maintains the high-voltage DC state (~820 V DC). This combination allows a continuous leakage current to grounded parts of the mounting rack.
ADDITIONAL REGULATORY CONTEXT: A technical audit report has been compiled under Reference Case [REDACTED]. Due to the reproducibility across independent retail batches, a product safety notification has also been submitted to the European market surveillance authority (Gewerbeaufsicht, Product Safety Division). Serial numbers, precise measurement protocols, and macro-photographic documentation are available for regulatory review. This issue happened in Europe and seems not to be an unusual behaviour. Since these products are also available in the USA, it might be worth to have a look on it. I strictly state, that the observed issues occured on products manufactured in the EU and in Israel. I do not know if the firmware for the EU market is the same as the firmware used in the USA.
- Model
- S440 Optimizer
- UPC
- unknown
- Serial number
- SZ3024-0193B6DA8-69
- Where
- Germany: Home/
Apartment/ Condominium - Who was involved
- Unspecified
- The reporter’s relation to them
- Unspecified
- As this report names them
- Brand Solar Edge, made or sold by SolarEdge Technologies, Inc.
- How badly, in CPSC’s words
- Incident, No Injury
CPSC’s disclaimer
Disclaimer: CPSC does not guarantee the accuracy, completeness, or adequacy of the contents of the Publicly Available Consumer Product Safety Information Database on SaferProducts.gov, particularly with respect to information submitted by people outside of CPSC.
Word for word, from the disclaimer in CPSC’s export.
Sources
Sources
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U.S. Consumer Product Safety Commission, SaferProducts.gov public database export.
Released Nov 4, 2026 and checked Nov 4, 2026. Updated daily. Public domain (U.S. Government work). CPSC asks to be credited, and that no endorsement be implied.
Reports of harm are from the U.S. Consumer Product Safety Commission (CPSC), on SaferProducts.gov. CPSC does not endorse Hearth Record.